Ep 1 while sitting at dinner table after chanel "attacked" she call grace 'gracie' which I believe so far only her father has. The other two could just be quincidental but that had to be deliberate by the writers.
Ep2 after placing body of chanel 4 in freezer the end of the scene hester and chanel 3 have a very strange smirk to each other. Thought that was weird
And the one that could be a forgotten line, depending on the finale. In ep1 when dean makes everyone stay at kappa house everybody disagrees but then gigi says they should. After talking she looks to grace who shuffles to get up and agree (she disagreed with dean but not gigi). I decided to go back and rewatch the eps and notice how gigi was with everyone to possible find a clue.
Anyways tell me what you think. Have you noticed any small things so far?